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dc.contributor.authorChoin, Byung Chul
dc.contributor.authorChung, Suk Ho
dc.date.accessioned2015-08-03T09:43:36Z
dc.date.available2015-08-03T09:43:36Z
dc.date.issued2012-01-01
dc.identifier.citationChoi, B.-C., & Chung, S.-H. (2012). Effect of Hydrogen Addition on Autoignited Methane Lifted Flames. Transactions of the Korean Society of Mechanical Engineers B, 36(1), 75–81. doi:10.3795/ksme-b.2012.36.1.075
dc.identifier.issn12264881
dc.identifier.doi10.3795/ksme-b.2012.36.1.075
dc.identifier.urihttp://hdl.handle.net/10754/562050
dc.description.abstractAutoignited lifted flames in laminar jets with hydrogen-enriched methane fuels have been investigated experimentally in heated coflow air. The results showed that the autoignited lifted flame of the methane/hydrogen mixture, which had an initial temperature over 920 K, the threshold temperature for autoignition in methane jets, exhibited features typical of either a tribrachial edge or mild combustion depending on fuel mole fraction and the liftoff height increased with jet velocity. The liftoff height in the hydrogen-assisted autoignition regime was dependent on the square of the adiabatic ignition delay time for the addition of small amounts of hydrogen, as was the case for pure methane jets. When the initial temperature was below 920 K, where the methane fuel did not show autoignition behavior, the flame was autoignited by the addition of hydrogen, which is an ignition improver. The liftoff height demonstrated a unique feature in that it decreased nonlinearly as the jet velocity increased. The differential diffusion of hydrogen is expected to play a crucial role in the decrease in the liftoff height with increasing jet velocity.
dc.publisherThe Korean Society of Mechanical Engineers
dc.titleEffect of hydrogen addition on autoignited methane lifted flames
dc.typeArticle
dc.contributor.departmentClean Combustion Research Center
dc.contributor.departmentCombustion and Laser Diagnostics Laboratory
dc.contributor.departmentMechanical Engineering Program
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.identifier.journalTransactions of the Korean Society of Mechanical Engineers B
dc.contributor.institutionEnvironment and Plant Team, Korean Register of Shipping, South Korea
kaust.personChung, Suk Ho


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